Is CVE-2021-20393 in the CISA KEV catalog?

No. CVE-2021-20393 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-20393?

CVE-2021-20393 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-20393?

CVE-2021-20393 has an EPSS score of 1.44% (70th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-20393?

Upgrade qradar user behavior analytics to 4.1.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-20393

HIGH

7.5

CVSS v3

NVD

Description

IBM QRadar User Behavior Analytics 1.0.0 through 4.1.0 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in the browser. This information could be used in further attacks against the system. IBM X-Force ID: 196001.

CWE-209

How to fix

Remediation Available

qradar user behavior analyticsNVD

Affected:>= 1.0.0, < 4.1.1Fixed in:4.1.1CVE-2021-20393derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

1.44%probability of exploitation in 30 days

70thpercentile

Moderate risk: more likely to be exploited than 70% of all known CVEs.

References

Vendor Advisory2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.